Need assistance building sound controlled LEDS

In summary, the target system will have a moving target that is perpendicular to the shooter. The target system has not had any problems with fabrication, but the customer requires more features than the system currently has. The aim is to add an audio-activated lighting system to the target system. A portable system would be best for this purpose. The customer is seeking help designing a circuit for the audio-activated lighting system.
  • #1
jacko jeebus
13
0
I am building a moving target system for a shooting range. It will have a 40 foot target moving perpendicular to the shooter. I have not had any problem with fabricating the target system, but I want to go above what the customer requires. Hopefully this lead to more work for myself in the future. From 1000 yards it can be difficult to see a 1" mark while the target is moving at 15 MPH without great optics. I am wanting to add an audio controlled (ring from when a bullet impacts steel) lighting system. I have search online stores gone into electronics shops and not many people have been helpful. So I figured an EE or EE student would be my best choice. I have come to the conclusion that a portable system would be best as it could be moved from one target to the next without laying wiring to the range. Any help on leads or help designing a circuit would be greatly appreciated. I am an automotive technician so the fabrication has been no problem, but building an LED circuit actuated by audio fools me. Thank you for your guys time.
 
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  • #2
So this uses real bullets? You want to light up a LED sign that says, "Bulls eye" or something?

If the slug is off-target, what sound will the microphone pick up? Will the microphone pick up background shots from other people in adjacent areas of the range?

Not that I'll be able to help you, but the more information you can give others, the better. Have you looked at the "Similar Threads" candidates at the foot of this page?
 
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  • #3
a search on "sound actuated switch kit" returned lots of hits. pick a hobby site.

I've used Ramsey, All Electronics, PartsExpress, MPJA.

discovercircuits dot com forums is a friendly DIY electronics site.

I'd go with a kit - saves a lot of pain.
 
  • #4
yeah it will be a real bullet. Also there won't be any background noise. This target is going to be placed 600 to 1400 yards beyond all other targets, and if the person is off target the spotter will not see it light up. Thank you for your guys guidance on finding a kit/other sources.
 
  • #5
What high of lumens do you guys think would be necessary to see this light up from say a maximum 1760 yards (1mile) away?
 
  • #6
Something like a bicycle LED lamp? Maybe a pair to make it appear wider?
 
  • #7
how do you suggest that I keep it lit for say 5 seconds if I use a bike LED setup?
 
  • #8
An electronic timer using an IC should be straightforward. But first you need to select the sound-activated switch. Choose one or two and post a link here.

If you know someone with a bike head lamp that uses LEDs get him/her to ride off 1 mile and then ride towards you so you can gauge its effectiveness in daylight. Maybe a LED torch (flashlight) might do the job? Some have an assembly with half a dozen LEDs.
 
  • #9
http://www.orvac.com/ShowItem/138459%20Sound%20Activated%20Switch%20Do-It-Yourself%20Kit.aspx [Broken]
http://www.electronickits.com/kit/complete/elec/UK257.htm
 
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  • #10
The orvac board seems like it may do exactly what you want, as is. They don't say what the amperes capacity of the relay is, but I reckon it should be able to switch the current of a bike headlamp or similar on and off. They also don't indicate what voltage the board needs.

The second one seems like it may need an additional small circuit to stretch the on time of your lamp to a few seconds (though we can't be sure, as the description is a little sketchy). But at 3A the relay is good enough to switch a bright LED lamp. It would probably be best to go for a lamp that runs off 12v since that is the voltage for that board, and this would save you having to construct a separate dc supply for the LEDs. 12 volts rules out using pushbike lamps, unless you could find 6v lamps and run 2 in series off 12 volts? A car headlamp or LED tail-lamp might be overkill, and probably draws way too much current, but might be worth looking into, just the same. Expensive, so price one from a junk yard. At least you'd know they'd be well sealed against the weather.

It may be possible to make an argument for not using the mechanical relay at all, but to build an electronic circuit to do the switching for greater reliability. But this decision can be deferred until you have got the basic circuit working and adjusted.

What sort of sound will the microphone hear? A short whistle, followed by an almighty crash?
 
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  • #11
Honestly there will not be very much sound at a mile. Ballistically an average round is 900FPS give or take, some big magnum cartridges upwards of 1800 FPS. So, it will be a "TING" Sound is right around the 5 minute mark
 
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  • #12
would one of these be able to power a relay?
 
  • #13
jacko jeebus said:
would one of these be able to power a relay?
They both have a relay on the board.
 
  • #14
Sorry should have clarified. I meant to power a standard automotive relay to power 10 amps switched. I have found on a sunny day a bike style led system is not bright enough. 2 projector fog lights are just right.
 
  • #15
You should be able to use the on-board relay to operate the car relay, but you'll have to look at the specs of the car relay. I'm wondering whether red lights might stand out better than white lights? You'd have them mounted against something matt black.
 
  • #16
I have bright white in an orange housing.
 

1. How do sound controlled LEDs work?

Sound controlled LEDs use a microphone to detect sound waves and convert them into electrical signals. These signals are then sent to a microcontroller, which analyzes the frequency and amplitude of the sound and triggers the corresponding LED lights to turn on or off.

2. What materials do I need to build sound controlled LEDs?

To build sound controlled LEDs, you will need a microphone, a microcontroller such as an Arduino, LED lights, resistors, wires, and a power source. You may also need a breadboard and jumper wires to prototype your circuit before building it on a PCB.

3. How do I code the microcontroller for sound controlled LEDs?

The code for sound controlled LEDs will vary depending on the microcontroller you are using. However, the basic principle is to read the analog input from the microphone, process the sound data, and use it to control the digital output pins connected to the LED lights. There are many tutorials and code examples available online for different microcontrollers.

4. Can I control the color and brightness of the LEDs with sound?

Yes, it is possible to control the color and brightness of the LEDs with sound. This can be achieved by using RGB LEDs and varying the voltage or current supplied to each color channel based on the sound input. You can also use PWM (pulse width modulation) to adjust the brightness of the LEDs.

5. Is it possible to make the sound controlled LEDs react to music?

Yes, sound controlled LEDs can be programmed to react to music. You can use a music visualizer program or create your own code to analyze the frequency and amplitude of the music and trigger the LEDs accordingly. This can create a fun and dynamic light show that syncs with the music.

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